Friday, July3, 2020
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Marine Weather and Tides
Huntington, VA

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 5:46AMSunset 8:38PM Friday July 3, 2020 9:29 PM EDT (01:29 UTC) Moonrise 6:26PMMoonset 3:14AM Illumination 97% Phase: Waxing Gibbous; Moon at 13 days in cycle
NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.
Marine Forecasts
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ANZ535 Tidal Potomac From Key Bridge To Indian Head- 737 Pm Edt Fri Jul 3 2020
Tonight..NW winds 5 kt. Waves less than 1 ft.
Sat..NE winds 5 kt. Waves less than 1 ft. Scattered showers and tstms.
Sat night..SW winds around 5 kt. Waves 1 ft. Scattered showers and tstms.
Sun..S winds 5 kt. Waves less than 1 ft.
Sun night..S winds 5 kt. Waves less than 1 ft.
Mon..S winds around 5 kt. Waves 1 ft.
Mon night..S winds around 5 kt. Waves 1 ft.
Tue..S winds around 5 kt. Waves 1 ft.
Wed..S winds around 5 kt. Waves 1 ft. A chance of showers. Winds and waves higher and visibilities lower in and near tstms.
ANZ500 737 Pm Edt Fri Jul 3 2020
Synopsis for the tidal potomac and md portion of the chesapeake bay.. High pressure over the great lakes will promote a light north northwest flow heading into the holiday weekend. A weak backdoor cold front will approach the waters from new england on Saturday, stalling nearby Sunday before dissipating on Monday.


7 Day Forecast for Marine Location Near Huntington, VA
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location: 38.79, -77.07     debug


Area Discussion for - Baltimore, MD/Washington
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FXUS61 KLWX 031900 AFDLWX

Area Forecast Discussion National Weather Service Baltimore MD/Washington DC 300 PM EDT Fri Jul 3 2020

SYNOPSIS. A weak low pressure area will move southward into the Mid- Atlantic coast through tonight. A weak backdoor cold front will sink southwestward from New England on Independence Day, nearing the region Saturday night into Sunday, before dissipating early next week. High pressure returns thereafter with hot and humid conditions persisting.

NEAR TERM /THROUGH TONIGHT/. Latest surface analysis shows surface high pressure centered to our northwest, while upper trough is located off the Mid- Atlantic coast while ridging extends over the central CONUS per water vapor imagery. Locally, partly cloudy to clear conditions are observed over our area with light northerly to northwesterly winds.

High temperatures today will be in the mid to upper 90s across most of our areas, the ridges will remain in the 80s. With dew points in the mid 60s, heat index values are expected to reach between the upper 90s to near 100F.

Our local radar shows no returns at this time and is expected to remain dry across most of our area for the rest of today. A few terrain induced isolated showers cannot be ruled out. Showers and thunderstorms over PA/NJ, supported by an upper shortwave, will approach the NE corner of our CWA this evening. Latest CAMs show that any convection that approaches our area may be dissipating near the MD/PA line and have decreased our PoPs per this.

Dry conditions expected overnight with lows in the 60s at higher elevations and in the 70s elsewhere, which is 6 to 10 degrees above normal.

SHORT TERM /SATURDAY THROUGH SUNDAY NIGHT/. Weak low pressure will be sitting offshore on Saturday while backdoor cold front and mid level shortwave drops into our area. Flow will become more easterly through the day Saturday increasing moisture advection. Latest models show CAPE values between 1000 and 2000 J/kg, and shear near 20 knots. All these along with diurnal heating will allow for isolated showers and thunderstorms to develop over our area in the afternoon and evening, with highest instability between Central Virginia and southern Maryland. However, chances for showers and thunderstorms remain over all of our CWA.

High temperatures on Saturday will reach the upper 80s and 90s across our area and dew points will be between the mid 60s and low 70s. Highest heat index values will reach mid to upper 90s mainly over areas east of the Blue Ridge, DC and south of it. Drier conditions expected Saturday night, with a few lingering showers possible with low temperatures in the 60s and 70s.

On Sunday the front will be weakening just to our south as high pressure is centered to our north. With some instability, the boundary lingering nearby, diurnal heating, could see an isolated to scattered shower and/or thunderstorm, especially over higher terrain. High temperatures will be in the low to mid 90s with heat index values reaching the upper 90s on some locations. Dry conditions over most of our area on Sunday night, with maybe a lingering shower over central VA.

LONG TERM /MONDAY THROUGH THURSDAY/. The long term features a fairly summer-like pattern, which is to be expected now that we're in July. Overall, an upper level ridge will dominate the region. However, several models are indicating a weak upper low embedded within the ridge slowly heading north from the Gulf Coast to the Tennessee/Lower Mississippi Valleys, and then northeast from there, eventually reaching our vicinity towards the end of the week. With the ridge, albeit weak, in place much of the week, temps Monday thru Wednesday should run in the low-mid 90s, a bit above normal for this time of year but not excessive. Isolated mountain convection is possible all three days, but the metros are more likely to stay dry. By Thursday as the upper low approaches, the risk of showers and t-storms will increase region wide, and temps are more likely to stay in the 80s as the clouds and precip potential builds.

AVIATION /19Z FRIDAY THROUGH WEDNESDAY/. VFR conditions expected generally through Sunday night. However this evening, isolated to scattered thunderstorm is possible near MTN and BWI, which could bring sudden restrictions over the terminals. Saturday and Sunday afternoon/evening isolated to scattered convection is also possible, especially near CHO.

VFR with minimal if any impacts to aviation Monday and Tuesday under high pressure.

MARINE. Winds are expected to remain below Small Craft Advisory criteria through Sunday night. However, short periods of gusts near criteria are possible and may be able to cover those with a Marine Weather Statement if needed. Also, isolated thunderstorms could trigger a few Special Marine Warnings. Today higher chances are over the upper Bay this evening. Saturday afternoon/evening isolated to scattered convection is also possible over the waters. For Sunday the chances are smaller.

Light winds over the waters Monday and Tuesday with minimal t-storm risks.

LWX WATCHES/WARNINGS/ADVISORIES. DC . None. MD . None. VA . None. WV . None. MARINE . None.

SYNOPSIS . LFR NEAR TERM . IMR SHORT TERM . IMR LONG TERM . RCM AVIATION . IMR/RCM MARINE . IMR/RCM


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
WASD2 - 8594900 - Washington, DC 6 mi60 min NW 1.9 G 4.1 91°F 83°F1010.1 hPa
BSLM2 - Chesapeake Bay, MD 19 mi120 min S 1 1009 hPa
NCDV2 33 mi60 min WSW 1.9 G 2.9 85°F 82°F1009.7 hPa
APAM2 - 8575512 - Annapolis, MD 34 mi60 min W 4.1 G 7 90°F 84°F1009.2 hPa
TPLM2 - Thomas Point, MD 34 mi90 min SW 2.9 G 4.1 88°F 83°F1010.7 hPa (-0.6)73°F
44062 - Gooses Reef, MD 38 mi42 min SW 3.9 G 5.8 86°F 85°F
CPVM2 39 mi60 min 88°F 70°F
FSKM2 - 8574728 - Francis Scott Key Bridge, MD 41 mi60 min W 7 G 8 89°F 1009.5 hPa
FSNM2 41 mi90 min W 11 G 12 90°F 1009.6 hPa (-0.3)
BLTM2 - 8574680 - Baltimore, MD 42 mi60 min WNW 2.9 G 5.1 91°F 75°F1009.2 hPa
COVM2 - 8577018 - Cove Point LNG Pier, MD 45 mi60 min WSW 4.1 G 5.1 1010.5 hPa
SLIM2 - 8577330 - Solomons Island, MD 46 mi60 min WSW 1 G 1.9 85°F 83°F1010 hPa

Wind History for Washington, DC
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Washington/Reagan National Airport, DC, VA5 mi38 minW 410.00 miPartly Cloudy90°F64°F42%1010.4 hPa
Fort Belvoir, VA7 mi34 minN 010.00 miFair80°F70°F74%1010.7 hPa
Camp Springs / Andrews Air Force Base, MD11 mi94 minNW 410.00 miFair90°F61°F39%1010.5 hPa
College Park Airport, MD15 mi35 minN 010.00 miFair82°F65°F58%1010.2 hPa
Washington/Dulles International Airport, DC, VA23 mi38 minWSW 310.00 miFair85°F66°F53%1010.5 hPa
Quantico Marine Corps Airfield - Turner Field, VA23 mi34 minW 68.00 miFair83°F73°F72%1010.8 hPa
Manassas, Manassas Regional Airport/Harry P. Davis Field, VA24 mi34 minN 010.00 miFair82°F71°F69%1011.5 hPa

Link to 5 minute data for KDCA

Wind History from DCA (wind in knots)
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Last 24hrW4SW3CalmS4SW3CalmSW3NW3N5N5N7NW8NW9N96N7NE33NW12NW4NW11NW10NW7W4
1 day agoSW4SW3CalmS5N3NW3N6NW6N6N6N9N8N7N9NE10N11N8N7NW5
G14
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2 days agoCalmE5E5E5E7NE7N3S3E7NE7NE4NE4NE63NE5NE6NE5N7SE11SE8E6S5S6S5

Tide / Current Tables for Alexandria, Virginia
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Alexandria
Click for Map
Fri -- 01:10 AM EDT     0.21 feet Low Tide
Fri -- 04:13 AM EDT     Moonset
Fri -- 05:48 AM EDT     Sunrise
Fri -- 07:08 AM EDT     3.57 feet High Tide
Fri -- 02:12 PM EDT     0.03 feet Low Tide
Fri -- 07:26 PM EDT     Moonrise
Fri -- 07:45 PM EDT     2.93 feet High Tide
Fri -- 08:36 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.40.20.311.92.73.33.63.42.82.21.510.400.20.81.72.42.82.92.621.3

Tide / Current Tables for Washington, Potomac River, D.C.
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Weather Map
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wmap_A
GEOS Local Image of Mid-Atlantic    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
Link to Loop



Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Baltimore, MD/Washington (21,6,7,8)
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Ground Weather Radar Station Sterling, VA
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weather_mapweather_map weather_map

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The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerous of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.